Understanding Numbers

Numbers are everywhere! They help us count, measure, compare, and solve problems. In this section, you'll explore whole numbers, fractions, decimals, and how to use them confidently.

Operations with Numbers

Learn how to add, subtract, multiply, and divide different kinds of numbers. You'll also discover how to estimate answers and check if your solutions make sense.

Why Is Number Sense Important?

Good number sense helps you quickly decide the best way to solve a problem, whether it's figuring out how much money you have or dividing pizza among friends.

Key Ideas

• Recognizing odd and even numbers
• Understanding place value
• Comparing and ordering numbers
• Using mental math tricks

Practice Makes Perfect

The more you work with numbers, the faster and more accurate you'll become!